User manual DURKOPP 888

[. . . ] 888 Spezialnähmaschine Betriebsanleitung Instruction manual D GB Postfach 17 03 51, D-33703 Bielefeld · Potsdamer Straße 190, D-33719 Bielefeld Telefon +49 (0) 521 / 9 25-00 · Telefax +49 (0) 521 / 9 25 24 35 · www. duerkopp-adler. com Ausgabe / Edition: 09/2010 Änderungsindex Rev. index: 04. 0 Printed in Federal Republic of Germany Teile-Nr. /Part. -No. : 0791 888740 Alle Rechte vorbehalten. Eigentum der Dürkopp Adler AG und urheberrechtlich geschützt. Jede, auch auszugsweise Wiederverwendung dieser Inhalte ist ohne vorheriges schriftliches Einverständnis der Dürkopp Adler AG verboten. [. . . ] Manually controlled machines (without thread trimming) ­ Tensioners (3) and (4) are mechanically switched off when the foot is lifted with a hand or knee lever. Machines with thread trimming ­ Tensioners (3) and (4) are switched off with an electric magnet or pneumatic cylinder at the foot automatic lifting. If the automatic foot lifting at the machine stop is pre-selected, the tensioners are switched off, but temporarily only, so that the switching off electric magnet does not overheat. ­ Tensioners (3) and (4) are also switched off temporarily during the trimming cycle. ­ Tensioners (3) and (4) are not switched off at the foot lifting with the hand or knee lever. 16 6. 5. 1 Function of the thread main tension and the thread supplementary tension in relation to the sewing foot lifting The thread supplementary tension can, at any time, be switched on or off by actuating key 4 (see chapter 6. 5) of the key pad. To this end, the parameter F-147 must be set on "1". Sewing foot lifting during seam Sewing foot lifting after thread trimming Threadmain tension 0 0 1 1 Threadsupplement. tension 0 0 1 1 Parameter Setting F-196=0 F-196=1 F-196=2 F-196=3 Threadmaintension 0 1 0 1 Threadsupplement. tension 0 1 0 1 1 = Thread tension opened mechanically 0 = Thread tension closed mechanically · · If the thread' s supplementary tension is opened, this condition will be maintained when lifting the sewing foot. When switching the machine off, the last setting of the thread's supplementary tension will be maintained through the mains connection. GB 17 6. 6 Adjusting the thread regulator 2 1 1234 The thread regulator (2) controls the quantity of needle thread required for stitch formation. The thread regulator must be precisely adjusted for an optimum result. ­ Loosen the screw (1), shift the thread regulator (2), and tighten the screw (1). ­ For most of the sewing operations, the thread regulator optimal setting is with its right edge set to `2'. ­ The setting `3' is suitable for thin materials and very short stitches only. 18 6. 7 Changing the needle with single-needle machines with the hook on the right 1 2 MAX. 3° 3 4 5 Caution!Replace the needle with the main switch switched off and the motor stopped. ­ ­ Draw the lever (1) in your direction to loosen the screw fixing the needle. Remove the needle and insert a new one with the needle scarf (2) to the right [see section (3) or (4)]. The needle may not be oriented as shown at section (5). Turn the lever (1) back to tighten the screw fixing the needle. GB ­ Caution!A false orientation of the needle may damage the hook point. When changing to another needle size, the distance between hook and needle, as well as the position of the throat plate towards its post must be readjusted (see service instructions). 19 6. 8 Changing the needle with single-needle machines with the hook on the left (machine with lower material trimming) 1 2 3 4 5 MAX. The needle may only be changed with the sewing machine switched off ­ ­ Draw the lever (1) in your direction to loosen the screw fixing the needle. Remove the needle and insert a new one with the needle scarf (2) to the left [see section (3) or (4)]. The needle may not be oriented as shown at section (5). [. . . ] A clean machine is a trouble-free machine. 2 4 3 6 5 1 7 Maintenance work to be carried out Machine head - Remove lint, pieces of thread (e. g. with an air blow gun) Explanation Operating hours Places in special need of cleaning: - Area under the throat plate, feeding roller (2), top roller and its surrounding. - Area around the hook (1) - Bobbin housing (6) - Thread trimmer - Area around the needle CAUTION !Be sure to hold the blow air gun so that no sewing dust is blown into the oil sump. 8 - Remove lint, pieces of thread (e. g. [. . . ]